From: Ben Greear <greearb@candelatech.com>
To: Phil Dibowitz <phil@ipom.com>
Cc: Rick Jones <rick.jones2@hp.com>, jamal <hadi@cyberus.ca>,
netdev@vger.kernel.org, David Miller <davem@davemloft.net>,
Jeff Garzik <jeff@garzik.org>
Subject: Re: reminder, 2.6.18 window...
Date: Thu, 25 May 2006 00:18:31 -0700 [thread overview]
Message-ID: <44755A47.3030405@candelatech.com> (raw)
In-Reply-To: <44753A3B.5010204@ipom.com>
Phil Dibowitz wrote:
> As for the clearing, in this case, the clearing is done by a command to
> the hardware - and I believe the hardware does that atomically. However,
> I could certainly add a spinlock around it if someone sees a need.
No, because then you'd also have to add the spin-lock in the hot path
to keep rx/tx threads from accessing counters at the same time. There is no
way a patch that hurts performance like this will be accepted, but I'm
still hopeful that a patch with zero or very near zero performance impact
will be accepted.
Ben
--
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc http://www.candelatech.com
next prev parent reply other threads:[~2006-05-25 7:19 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-24 1:22 reminder, 2.6.18 window David Miller
2006-05-24 8:01 ` Phil Dibowitz
2006-05-24 18:21 ` jamal
2006-05-24 18:23 ` Jeff Garzik
2006-05-24 18:34 ` Rick Jones
2006-05-24 18:56 ` Phil Dibowitz
2006-05-24 19:05 ` Jeff Garzik
2006-05-24 19:14 ` Phil Dibowitz
2006-05-24 20:01 ` Brent Cook
2006-05-24 20:08 ` Jeff Garzik
2006-05-25 7:23 ` Bill Fink
2006-05-25 13:05 ` Brent Cook
2006-05-25 16:12 ` Bill Fink
2006-05-25 17:59 ` Phil Dibowitz
2006-05-25 18:41 ` Brent Cook
2006-05-25 19:22 ` Phil Dibowitz
2006-05-25 20:29 ` David Miller
2006-05-25 21:04 ` Phil Dibowitz
2006-05-25 21:07 ` David Miller
2006-05-26 9:52 ` Andi Kleen
2006-05-25 13:34 ` Dave Dillow
2006-05-26 9:46 ` Andi Kleen
2006-05-24 20:10 ` jamal
2006-05-24 20:25 ` Rick Jones
2006-05-25 15:27 ` jamal
2006-05-25 16:43 ` Rick Jones
2006-05-26 22:06 ` Rick Jones
2006-05-24 20:44 ` Brian Haley
2006-05-24 21:01 ` Rick Jones
2006-05-26 6:48 ` Phil Dibowitz
2006-05-24 20:48 ` Phil Dibowitz
2006-05-24 21:04 ` Rick Jones
2006-05-24 21:10 ` Ben Greear
2006-05-25 5:01 ` Phil Dibowitz
2006-05-25 7:18 ` Ben Greear [this message]
2006-05-25 7:55 ` Bill Fink
2006-05-25 12:17 ` Francois Romieu
2006-05-25 9:53 ` Pekka Savola
2006-05-24 20:53 ` Andy
2006-05-26 9:43 ` Andi Kleen
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